In actual work, the action process of the circuit breaker includes energy storage, closing and opening. It can only be closed after energy storage. Therefore, the circuit breaker energy storage motor mechanism has an important role and influence on the circuit breaker. If the circuit breaker energy storage motor mechanism fails, it will seriously affect the closing performance of the circuit breaker.

With this in mind, when analyzing and designing circuit breakers, sufficient attention should be paid to the circuit breaker energy storage motor mechanism. The circuit breaker energy storage mechanism usually includes a motor, a gear reduction device, an energy storage medium (spring), a stop (closed lock), and a micro switch. The energy storage motor provides the required power for the entire device, reduces the rotational speed through the gear reduction device, increases the torque, and stretches, compresses or rotates the energy storage medium (spring) to store energy.

When the circuit breaker energy storage motor mechanism is about to reach the stop position, the micro switch operates, the motor current is cut off, and the energy storage mechanism finally stops at the stop position, that is, the output force of the circuit breaker energy storage motor mechanism acts. Brake lock on the buckle.